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The main cast of Predator. Left to right: Blain, Hawkins, Dutch, Mac, Dillon, Billy, Poncho.

* Arnold Schwarzenegger as MAJ Alan "Dutch" Schaefer: Dutch is the leader of the team, and an elite veteran, who served together with Dillion in Vietnam during the Battle of Huế.
* Carl Weathers as George Dillon: Dillon is a former teammate of Dutch and current CIA agent, sent along with Dutch's team for the mission. He is no longer a regular field agent, so he is out of practice.
* Elpidia Carrillo as Anna: Anna is a guerrilla, captured by Dutch's troops following a battle with the rebels. She later tells them of an "old demon" that during hot summers attacks people from violent areas who are later found skinned and hollowed.
* Bill Duke as Mac Eliot: Mac is a close friend of Blain's; they served in Vietnam together and were the only two members of their platoon to make it out alive after a night-long battle. He is hostile towards Dillon, stating that he'll kill him if he hinders the group.
* Jesse Ventura as Blain Cooper: Blain fought alongside Mac in the Vietnam War and were the only members of their platoon to survive a night-long battle. He often chews tobacco, and wears a battered old cowboy hat. His weapon of choice is a modified minigun he calls "Ol' Painless," but he also carries a submachine gun when he needs to be stealthy. A
* Sonny Landham as Billy Sole: Billy is a Native American with a strong jungle sense. He is generally very quiet, and Hawkins constantly attempts to make him laugh.
* Richard Chaves as Jorge "Poncho" Ramirez: Poncho is a Chicano, who speaks fluent Spanish, and shows a sarcastic wit.
* Shane Black as Rick Hawkins: Hawkins is the team's radio operator and technical expert. He tells sexual jokes, though he usually has to explain them, and reads comic books.
* R. G. Armstrong as Major General Homer Phillips: Phillips is the coordinator of the mission, who forms the team based upon their reputation.
* Kevin Peter Hall as The Predator: The Predator is member of a warrior race which hunts aggressive members of other species for sport, uses active camouflage, a plasma weapon and can see the infrared spectrum. Hall also plays the end scene helicopter pilot
* Sven-Ole Thorsen as Russian military adviser

The soundtrack was composed by Alan Silvestri, who was coming off the huge success of Back to the Future in 1985. Predator was his first major action movie and the score is full of his now familiar genre characteristics: heavy horn blasts, staccato string rhythms, and undulating timpani rolls that highlight the action and suspense. Little Richard's song "Long Tall Sally" is featured in the helicopter en route to the jungle. Mac also recites a few lines from the song as he's chasing the Predator after it escapes from their booby trap.

R/Greenberg Associates created the film's optical effects, including the alien's ability to become invisible, its thermal vision point-of-view, its glowing blood, and the electrical spark effects.[7] The invisibility effect was achieved by having someone in a bright red suit (because it was the farthest opposite of the green of the jungle and the blue of the sky) the size of the Predator. The red was removed with chroma key techniques, leaving an empty area. The take was then repeated without the actors using a 30% wider lens on the camera. When the two takes were combined optically, the jungle from the second take filled in the empty area. Because the second take was filmed with a wider lens, a vague outline of the alien could be seen with the background scenery bending around its shape.[7] For the thermal vision, infrared film could not be used because it did not register in the range of body temperature wavelengths. The filmmakers used an inframetrics thermal video scanner as it gave good heat images of objects and people.[7] The glowing blood was achieved by green liquid from chem-lite sticks used by campers.[7] The electrical sparks were rotoscoped animation using white paper pin registered on portable light tables to black and white prints of the film frames. The drawings were composited by the optical crew for the finished effects.[7] The film was nominated for an Academy Award for Visual Effects.